No, the difference is you can get Belgian and German Beers in most parts of the country. You just can't get good pizza.
I think the issue here is that your definition of "good pizza" is exceptionally narrow...
I think they might be getting the point.
When someone says "pizza" to me, I never ever ever think of Chicago style pizza, Mexican pizza, White pizza, or any other of the variations that have come up. If you mean Chicago style pizza, say Chicago style pizza. That's what it is.
If you just say pizza to me, you're talking about thin crust, red sauce, cheese, and maybe some toppings. Pepperoni is a favorite.